Merrimac, VA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Merrimac, a community in Montgomery County, Virginia.
This Afternoon
69°F
Sunny
Sunny. High near 69, with temperatures falling to around 63 in the afternoon. South wind around 7 mph.
7-day forecast for Merrimac
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Sunny | 7 mph S | 0% |
| Tonight | 50°F | Mostly Clear then Patchy Fog | 3 mph SE | 1% |
| Wednesday | 69°F | Patchy Fog then Mostly Cloudy | 2 to 9 mph SE | 13% |
| Wednesday Night | 60°F | Light Rain | 5 mph S | 77% |
| Thursday | 73°F | Partly Sunny | 6 mph SW | 13% |
| Thursday Night | 55°F | Chance Light Rain | 3 mph SW | 41% |
| Friday | 69°F | Chance Light Rain | 5 mph W | 29% |
| Friday Night | 43°F | Mostly Clear | 3 mph NW | 11% |
| Saturday | 61°F | Mostly Sunny | 3 to 9 mph NW | 6% |
| Saturday Night | 35°F | Partly Cloudy | 2 to 6 mph NW | 6% |
| Sunday | 60°F | Mostly Sunny | 3 to 7 mph NW | 5% |
| Sunday Night | 34°F | Partly Cloudy then Slight Chance Light Rain | 7 mph W | 15% |
| Monday | 59°F | Slight Chance Light Rain then Mostly Sunny | 7 to 13 mph W | 15% |
| Monday Night | 34°F | Mostly Clear | 8 mph W | 10% |
Forecast source: National Weather Service (api.weather.gov) for Merrimac (37.195, -80.422). Updated through the day.
Growing snapshot for Merrimac
Last spring frost
Apr 24
First fall frost
Oct 19
Growing season
175 days
Hardiness zone
7a
More local growing data for Merrimac: nearby ZIP 24061 weather · frost dates · planting calendar · Virginia frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Blacksburg Nwso, Va (1.6 mi from Merrimac). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.